Remove outdated troubleshooting infos (#16)

* Next version of NTRE will use gameinfo.txt to handle mounting OG:NT
  assets mounting instead, the "neopath" mounting is removed
* Linux glic issue no longer applies since the TF2 64-bit SDK update

Author: nullsystem

src/guide/install/index.md

@@ -66,16 +66,6 @@ standard setups. However if you have issues...
 
 ## Troubleshooting
 
-### Cannot mount original NEOTOKYO assets
-
-This could happen if you have NEOTOKYO/Steam installed at a non-default 
-location. Open up "Properties..." then launch options and set to your 
-custom install path:
-
-```
--neopath "C:\PATH\TO\YOUR\NEOTOKYO\NeotokyoSource\"
-```
-
 ### Cannot join VAC servers
 
 The client loads up in insecure mode by default, which will get blocked by
@@ -110,30 +100,3 @@ then click "Run". This will popup everytime NT;RE is started through Steam.
 
 ![Picture of the installation folder](folderstructure.png)
 
-### Linux - engine.so: cannot enable executable stack as shared object requires: Invalid argument
-
-Since [glibc 2.41, Source SDK 2013's `engine.so` will fail to load](https://github.com/ValveSoftware/portal2/issues/451)
-causing the game to not start. To workaround this, go to the Source SDK 2013 Multiplayer's bin directory:
-
-```
-~/.steam/steam/steamapps/common/Source SDK Base 2013 Multiplayer/bin
-```
-
-Then make a backup of `engine.so` and use either:
-
-[patchelf](https://github.com/NixOS/patchelf):
-
-```
-$ cp engine.so engine.so.bak
-$ patchelf --clear-execstack engine.so
-```
-
-Or [execstack](https://linux.die.net/man/8/execstack):
-
-```
-$ cp engine.so engine.so.bak
-$ execstack -c engine.so
-```
-
-NT;RE should be able to load up normally afterward.
-